Running a pruned node makes it harder to use with wallets like sparrow or running an electrum server. If the blockchain becomes too bloated, people will give up and start using public nodes and block explorers instead. The only nodes running will be by corporations. And SPV doesn't fix this. When you can't fully verify all transactions, all the running nodes could simply put an invalid transaction in the blockchain, and SPV nodes will believe it if enough PoW is provided. This will create coins out of thin air. Of course, this won't happen anytime soon even with inscriptions, but corruption will eventually make Bitcoin Core increase the block size and will try to turn Bitcoin into a shitcoin like Solana.